text: /*
   *  OMAP GPMC (General Purpose Memory Controller) defines
   *
   *  This program is free software; you can redistribute  it and/or modify it
   *  under  the terms of  the GNU General  Public License as published by the
   *  Free Software Foundation;  either version 2 of the  License, or (at your
   *  option) any later version.
   */
  
  #include <linux/platform_data/gpmc-omap.h>
  
  #define GPMC_CONFIG_WP		0x00000005
  
  /* IRQ numbers in GPMC IRQ domain for legacy boot use */
  #define GPMC_IRQ_FIFOEVENTENABLE	0
  #define GPMC_IRQ_COUNT_EVENT		1
  
  /**
   * gpmc_nand_ops - Interface between NAND and GPMC
   * @nand_write_buffer_empty: get the NAND write buffer empty status.
   */
  struct gpmc_nand_ops {
  	bool (*nand_writebuffer_empty)(void);
  };
  
  struct gpmc_nand_regs;
  
  #if IS_ENABLED(CONFIG_OMAP_GPMC)
  struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
  					     int cs);
  #else
  static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
  							   int cs)
  {
  	return NULL;
  }
  #endif /* CONFIG_OMAP_GPMC */
  
  /*--------------------------------*/
  
  /* deprecated APIs */
  #if IS_ENABLED(CONFIG_OMAP_GPMC)
  void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs);
  #else
  static inline void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs)
  {
  }
  #endif /* CONFIG_OMAP_GPMC */
  /*--------------------------------*/
  
  extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,
  			     struct gpmc_settings *gpmc_s,
  			     struct gpmc_device_timings *dev_t);
  
  struct device_node;
  
  extern int gpmc_get_client_irq(unsigned irq_config);
  
  extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
  
  extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
  extern int gpmc_calc_divider(unsigned int sync_clk);
  extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
  			       const struct gpmc_settings *s);
  extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p);
  extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
  extern void gpmc_cs_free(int cs);
  extern int gpmc_configure(int cmd, int wval);
  extern void gpmc_read_settings_dt(struct device_node *np,
  				  struct gpmc_settings *p);
  
  extern void omap3_gpmc_save_context(void);
  extern void omap3_gpmc_restore_context(void);
  
  struct gpmc_timings;
  struct omap_nand_platform_data;
  struct omap_onenand_platform_data;
  
  #if IS_ENABLED(CONFIG_MTD_NAND_OMAP2)
  extern int gpmc_nand_init(struct omap_nand_platform_data *d,
  			  struct gpmc_timings *gpmc_t);
  #else
  static inline int gpmc_nand_init(struct omap_nand_platform_data *d,
  				 struct gpmc_timings *gpmc_t)
  {
  	return 0;
  }
  #endif
  
  #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2)
  extern void gpmc_onenand_init(struct omap_onenand_platform_data *d);
  #else
  #define board_onenand_data	NULL
  static inline void gpmc_onenand_init(struct omap_onenand_platform_data *d)
  {
  }
  #endif
  